import numpy as np
list1=['a','b','c']
list2=['1','2','3']

dict2=dict(zip(list1,list2))
print(dict2)
narr=np.array(list1,dtype=object)
print(narr)
# 将list2加到narr后面
narr=np.append(narr,list2)
print(narr)
print(narr[0])
narr=narr.reshape(2,3)
print(narr)
narr[0,0]="a1"
print(narr[[0,1]])
narr2=np.random.randint(0,10,(2,3))